The standard error of a sample proportion is given by
where: p is the 'success' proportion and n is the sample size.
Therefore, the standard error of the sample is
Since <span>80% of the respondents were not satisfied with the policy, this shows that </span><span>20% of the respondents were satisfied with the policy</span>.
Therefore, the number of people who are satisfied with the policy is between 20 + 0.013% and 20 - 0.013% i.e. between 20.013% and 19.987%
Answer:
Step-by-step explanation:
The first thing we do to solve this is factor is completley
You can factor out a 4 from the numerator and get
4(3x+4)
The denominator is a difference of squares which means that
(x^2-y^2)=(x-y)(x+y)
which means that 9x^2-16=
(3x-4)(3x+4)
Put these together and get
The 3x+4 cancels out and we get left with
First, I need to turn my 10% in to a fraction:
10% ?
-------- = ______
100% 37.80
We want to find out what the question mark is ( which the question mark is equal to our answer)
First, I am going to multiply 10×37.80= 378
Then, I am going to divide 378 ÷ 100= 3.78
So my ?= 3.78
I hope this helped :)
Answer:
C.
Step-by-step explanation:
Answer:
Step-by-step explanation:
Substitute with x and y with 3:-
First, Multiply -1 and 3 = -3
Subtract 7 from -3 = -10
Multiply 2 and -10 = -20
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